JRC MUSES8920 High Quality Audio J-FET Input Dual Operational Amplifier Popular edition of MUSES01, offers finest sound to audio fans. J-FET-input dual OPAMP inheriting high quality sound from MUSES01, which employs chip-layout and lead-frame material optimized for mass production DIP package (lead insertion type) Provides mass productivity gain of audio equipment manufacturers and reduction of environmental impact. Suitable for a variety of music genres with no habit by making sound.